Kinetic parameters of the thermal decomposition of thiocyanatobismuthates(III) : Part 1. Single salts of alkali metals

Kinetic parameters of the thermal decomposition of alkali metal thiocyanatobismuthates, of general formula M₃[Bi(SCN)₆], where M ≡ Li, Na, K, Rb, and M[Bi(SCN)₄], where M ≡ Rb and Cs, and bismuth thiocyanate Bi(SCN)₃ have been determined. The reaction order and activation energy of several stages of the decomposition have been determined and the effect of the outer-sphere cations on the thermal stability and activation energy has been defined. The thermal stabilities of thiocyanatobismuthates and thiosulphatobismuthates have been compared.